APD3224PBC/A-F01 Equivalent & Substitute Parts

Part Overview

The APD3224PBC/A-F01 is an active blue LED indication component manufactured by Kingbright, designed for surface mount applications in discrete 3.2V configurations. This 1210 (3225 Metric) package LED operates at 470nm dominant wavelength with 380mcd brightness output and is ROHS3 compliant. Substitute parts are identified to address inventory availability, packaging format requirements, or specific application parameter needs while maintaining functional compatibility within the blue LED indication category.

Key Parameters

Parameter	Value	Significance for Substitution
Color	Blue	Primary functional requirement; all substitutes must match
Wavelength - Dominant	470nm	Optical characteristic; determines visual appearance
Voltage - Forward (Vf) (Typ)	3.2V	Circuit design parameter; affects current limiting resistor selection
Current - Test	20mA	Standard operating condition; baseline for brightness and thermal performance
Millicandela Rating	380mcd	Brightness specification; determines visibility in application
Mounting Type	Surface Mount	Assembly process requirement; all substitutes must be surface mount
Package / Case	1210 (3225 Metric)	Physical footprint; determines PCB layout compatibility
Viewing Angle	20°	Optical distribution; affects application visibility requirements
RoHS Status	ROHS3 Compliant	Regulatory compliance; required for many markets

Substitute Part Grouping Explanation

Substitute parts for the APD3224PBC/A-F01 are identified based on the following substitution criteria:

Primary Matching Parameters:

Color: Blue (all substitutes)
Mounting Type: Surface Mount (all substitutes)
RoHS Status: ROHS3 Compliant (all substitutes)
Moisture Sensitivity Level: MSL 3 (all substitutes)
Current - Test: 20mA (all substitutes)

Allowable Variation Parameters:

Voltage - Forward (Vf): ±0.2V tolerance acceptable for circuit design flexibility
Millicandela Rating: ±20% variation acceptable for indication applications
Wavelength - Dominant: ±5nm variation acceptable within blue spectrum
Viewing Angle: ±5° variation acceptable for indication purposes
Package / Case: Alternative metric packages acceptable if footprint compatible with PCB layout

Substitute Classification:

APD3224QBC/D-F01 (Kingbright): Same base product number (APD3224) with alternative package configuration (2-SMD, No Lead vs. 1210). Higher brightness (900mcd) and slightly higher forward voltage (3.3V). Wavelength shift to 465nm remains within blue spectrum. Smaller lens size (1.70mm vs. 1.80mm). Suitable for applications requiring higher brightness or alternative packaging.

LTST-C930TBKT (Lite-On Inc.): Different manufacturer with matching dominant wavelength (470nm). Package variant 1209 (3224 Metric) provides similar footprint to 1210 (3225 Metric). Slightly higher forward voltage (3.4V) and brightness (450mcd). Wider viewing angle (25° vs. 20°). Suitable for applications prioritizing wavelength consistency or requiring wider viewing angle.

Parameter Comparison

Parameter	APD3224PBC/A-F01 (Main)	APD3224QBC/D-F01 (Substitute)	LTST-C930TBKT (Substitute)
Manufacturer	Kingbright	Kingbright	Lite-On Inc.
Color	Blue	Blue	Blue
Wavelength - Dominant	470nm	465nm	470nm
Wavelength - Peak	468nm	460nm	468nm
Voltage - Forward (Vf) (Typ)	3.2V	3.3V	3.4V
Current - Test	20mA	20mA	20mA
Millicandela Rating	380mcd	900mcd	450mcd
Lens Style	Round with Domed Top	Round with Domed Top	Round with Domed Top
Lens Size	1.80mm Dia	1.70mm Dia	1.80mm Dia
Viewing Angle	20°	20°	25°
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	1210 (3225 Metric)	2-SMD, No Lead	1209 (3224 Metric)
Size / Dimension	3.20mm L x 2.40mm W	3.20mm L x 2.40mm W	3.20mm L x 2.40mm W
Height (Max)	2.40mm	2.40mm	2.40mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

APD3224PBC/A-F01 Selection Criteria: Select the main part when PCB layout specifically requires 1210 (3225 Metric) package footprint and 380mcd brightness output is sufficient for the application. This part maintains active product status with 3060 units in stock.

APD3224QBC/D-F01 Selection Criteria: Select this Kingbright substitute when higher brightness (900mcd) is required for improved visibility or when 2-SMD, No Lead package configuration is compatible with PCB assembly process. This part offers 10391 units in stock. Forward voltage increase to 3.3V requires circuit resistor recalculation. Wavelength shift to 465nm remains within acceptable blue spectrum range.

LTST-C930TBKT Selection Criteria: Select this Lite-On substitute when wavelength consistency at 470nm is critical and wider viewing angle (25°) provides application advantage. Package 1209 (3224 Metric) provides similar footprint compatibility. Forward voltage at 3.4V requires circuit resistor adjustment. This part offers 15400 units in stock. All regulatory compliance parameters (ROHS3, REACH Unaffected, MSL 3) match main part specifications.

Compliance Verification: All three parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 3 (168 Hours) moisture sensitivity rating. All parts are suitable for applications requiring regulatory compliance in restricted substance directives.

Frequently Asked Questions (FAQ)

Q: Can APD3224QBC/D-F01 be used as a direct replacement for APD3224PBC/A-F01?

A: APD3224QBC/D-F01 is functionally compatible for blue LED indication applications but requires PCB layout modification due to different package configuration (2-SMD, No Lead vs. 1210). Forward voltage increases from 3.2V to 3.3V, requiring current-limiting resistor recalculation. Brightness increases to 900mcd, which may affect visual appearance in the application. Wavelength shifts to 465nm, remaining within blue spectrum but with slightly different color perception.

Q: What is the impact of forward voltage differences between substitutes?

A: Forward voltage differences directly affect circuit design. APD3224PBC/A-F01 operates at 3.2V, APD3224QBC/D-F01 at 3.3V, and LTST-C930TBKT at 3.4V. When substituting, recalculate the current-limiting resistor using the formula: R = (Vsupply - Vf) / Iled. A 0.1V to 0.2V increase in forward voltage reduces resistor value, increasing current and brightness. Verify that the power supply and circuit design accommodate the new forward voltage specification.

Q: Are package dimensions compatible between 1210 (3225 Metric) and 1209 (3224 Metric)?

A: Both packages share identical length (3.20mm) and width (2.40mm) dimensions and maximum height (2.40mm). Package designation differences reflect internal construction variations. PCB footprint compatibility depends on specific pad layout and solder mask design. Verify PCB artwork compatibility before substituting LTST-C930TBKT (1209 package) for APD3224PBC/A-F01 (1210 package).

Q: What is the significance of millicandela rating differences?

A: Millicandela (mcd) rating indicates brightness output at specified test current (20mA). APD3224PBC/A-F01 provides 380mcd, APD3224QBC/D-F01 provides 900mcd, and LTST-C930TBKT provides 450mcd. Higher mcd values produce brighter indication. Selection depends on application visibility requirements. In low-light environments, higher mcd substitutes improve visibility. In high-brightness environments, lower mcd may be sufficient. Brightness differences affect user perception of LED indication status.

Q: How do wavelength differences affect color perception?

A: Dominant wavelength determines perceived color. APD3224PBC/A-F01 and LTST-C930TBKT both operate at 470nm (pure blue), while APD3224QBC/D-F01 operates at 465nm (cyan-blue). The 5nm difference is perceptible to human vision, with 465nm appearing slightly more cyan-tinted. For applications where color consistency across multiple LEDs is critical, maintain same wavelength specification. For general indication purposes, both 465nm and 470nm are acceptable within blue spectrum.

Q: What is the viewing angle significance for substitution?

A: Viewing angle defines the cone of light distribution. APD3224PBC/A-F01 and APD3224QBC/D-F01 provide 20° viewing angle, while LTST-C930TBKT provides 25° viewing angle. Narrower angles (20°) concentrate light intensity in forward direction, suitable for direct viewing applications. Wider angles (25°) distribute light over broader area, suitable for applications requiring visibility from multiple angles. Select based on application mounting position and required visibility range.

Q: Are all substitutes suitable for the same environmental conditions?

A: All three parts share identical Moisture Sensitivity Level (MSL 3, 168 Hours), ROHS3 compliance, and REACH Unaffected status. All are rated for surface mount assembly with equivalent environmental specifications. Substitution does not compromise environmental performance or regulatory compliance. Verify that specific application environmental requirements (temperature range, humidity exposure, vibration) are met by consulting detailed datasheets for each part.

Q: What inventory considerations apply to substitution?

A: APD3224PBC/A-F01 has 3060 units in stock, APD3224QBC/D-F01 has 10391 units in stock, and LTST-C930TBKT has 15400 units in stock. When primary part inventory is depleted, substitute parts offer alternative availability. Packaging format differs: APD3224PBC/A-F01 uses standard packaging, APD3224QBC/D-F01 uses Cut Tape (CT) & Digi-Reel®, and LTST-C930TBKT uses Tape & Reel (TR). Verify packaging compatibility with assembly process before selecting substitute based on inventory availability.

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